PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-12:43:10
G07     327.4          55.8                5.2 +/-    1.09       6.1 +/-    1.09  0.090 / 0.100
G08     105.1          50.7                8.7 +/-    0.86      10.9 +/-    0.86  0.080 / 0.120
G09     192.7          76.4                7.1 +/-    0.66       7.3 +/-    0.66  0.040 / 0.070
G11     147.8          11.1                3.4 +/-   16.25       9.2 +/-   16.25  0.040 / 0.060
G23     153.7          43.9                8.2 +/-    0.82      11.3 +/-    0.82  0.200 / 0.440
G27     58.8           33.5                6.6 +/-    0.57      10.8 +/-    0.57  0.280 / 0.480
G28     234.5          26.5                6.1 +/-    1.38      11.5 +/-    1.38  0.030 / 0.050
G30     298.8          32.2                4.7 +/-    1.17       7.9 +/-    1.17  0.040 / 0.050