PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-12:42:40
G03     232.3          67.3                6.9 +/-    0.35       7.4 +/-    0.35  0.120 / 0.310
G09     304.2          19.2                6.0 +/-    1.01      13.5 +/-    1.01  0.110 / 0.390
G14     99.3           17.5                8.1 +/-    1.00      19.0 +/-    1.00  0.040 / 0.070
G16     120.3          60.2               10.0 +/-    0.76      11.3 +/-    0.76  0.040 / 0.070
G22     189.6          51.5                9.7 +/-    0.61      12.0 +/-    0.61  0.040 / 0.060
G23     323.7          53.6                7.1 +/-    0.61       8.6 +/-    0.61  0.040 / 0.060
G26     65.1           49.4                5.8 +/-    0.59       7.4 +/-    0.59  0.030 / 0.040
G31     53.5           16.7                5.9 +/-    1.27      14.0 +/-    1.27  0.040 / 0.040