PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-21:43:00
G01     269.3          40.7                8.8 +/-    2.26      12.6 +/-    2.26  0.050 / 0.050
G03     315.9          30.2                6.8 +/-    1.10      11.9 +/-    1.10  0.050 / 0.050
G10     130.4          16.7                9.5 +/-    1.34      22.8 +/-    1.34  0.120 / 0.150
G11     249.9          20.2                9.6 +/-    1.84      20.9 +/-    1.84  0.190 / 0.230
G14     45.0           49.2                5.3 +/-    0.51       6.7 +/-    0.51  0.030 / 0.020
G22     313.9          52.0                5.9 +/-    0.82       7.2 +/-    0.82  0.030 / 0.020
G25     51.0           16.3                6.0 +/-    3.30      14.5 +/-    3.30  0.060 / 0.080
G26     149.2          25.0               13.6 +/-    1.40      26.6 +/-    1.40  0.070 / 0.080
G31     54.7           75.2                7.2 +/-    0.49       7.4 +/-    0.49  0.070 / 0.070
G32     64.6           32.6                5.3 +/-    1.50       8.7 +/-    1.50  0.080 / 0.050