PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-20:27:40
G01     39.4           13.5                9.6 +/-    0.98      24.8 +/-    0.98  0.080 / 0.330
G02     199.4          11.9               18.9 +/-   11.44      50.6 +/-   11.44  0.080 / 0.370
G06     173.0          44.2               17.2 +/-    1.31      23.4 +/-    1.31  0.100 / 0.160
G13     234.6          19.4               18.0 +/-    1.31      40.1 +/-    1.31  0.130 / 0.150
G15     268.2          10.8               13.4 +/-    3.28      36.6 +/-    3.28  0.080 / 0.210
G17     2.2            69.1               14.7 +/-    0.84      15.6 +/-    0.84  0.080 / 0.180
G19     285.5          69.4               14.5 +/-    0.67      15.4 +/-    0.67  0.220 / 0.400
G24     315.0          22.7               10.2 +/-    1.01      21.1 +/-    1.01  0.120 / 0.300
G28     76.8           44.8               13.1 +/-    0.73      17.8 +/-    0.73  0.070 / 0.070
G30     155.4          23.2               16.3 +/-    2.26      33.3 +/-    2.26  0.050 / 0.070