PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-15:13:10
G03     191.2          23.3               11.4 +/-    1.18      23.2 +/-    1.18  0.090 / 0.200
G07     286.6          35.0               11.6 +/-    1.52      18.4 +/-    1.52  0.110 / 0.210
G08     146.5          24.2               15.3 +/-    1.47      30.6 +/-    1.47  0.030 / 0.040
G09     320.7          59.2               11.0 +/-    0.46      12.6 +/-    0.46  0.030 / 0.040
G16     43.6           40.4               11.0 +/-    1.00      15.9 +/-    1.00  0.040 / 0.090
G23     109.9          77.3               12.3 +/-    0.72      12.6 +/-    0.72  0.040 / 0.080
G26     43.1           12.6                8.8 +/-    0.61      23.2 +/-    0.61  0.070 / 0.160
G27     103.2          32.3               14.8 +/-    0.41      24.8 +/-    0.41  0.100 / 0.150
G30     271.5          11.3                5.8 +/-   21.91      15.9 +/-   21.91  0.060 / 0.110