PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-05:58:00
G01     256.7          37.7                4.0 +/-    1.01       6.1 +/-    1.01  0.040 / 0.040
G03     316.4          36.6                1.8 +/-    1.11       2.8 +/-    1.11  0.040 / 0.050
G11     238.9          15.7                6.7 +/-    1.06      16.3 +/-    1.06  0.070 / 0.100
G14     56.5           42.3                3.1 +/-    0.38       4.4 +/-    0.38  0.070 / 0.100
G16     166.5          13.1               -6.8 +/-   11.63     -17.6 +/-   11.63  0.090 / 0.300
G22     309.8          61.8                3.8 +/-    1.30       4.2 +/-    1.30  0.110 / 0.290
G23     282.2          15.0               -1.7 +/-    7.70      -4.2 +/-    7.70  0.040 / 0.090
G26     142.7          32.9                8.5 +/-    0.66      14.1 +/-    0.66  0.040 / 0.100
G31     42.4           64.7                3.3 +/-    0.30       3.6 +/-    0.30  0.120 / 0.470
G32     72.3           27.3                2.3 +/-    1.05       4.3 +/-    1.05  0.030 / 0.040