PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-01:28:10
G02     214.8          61.0               10.8 +/-    1.01      12.2 +/-    1.01  0.060 / 0.090
G06     60.7           75.6                8.7 +/-    0.62       9.0 +/-    0.62  0.090 / 0.080
G12     318.2          34.7                8.7 +/-    1.41      13.8 +/-    1.41  0.040 / 0.040
G17     54.2           36.3                8.5 +/-    0.61      13.2 +/-    0.61  0.050 / 0.050
G19     37.9           50.1                8.1 +/-    1.91      10.2 +/-    1.91  0.030 / 0.030
G24     266.9          41.7               12.5 +/-    1.80      17.7 +/-    1.80  0.030 / 0.030
G28     122.3          13.8               10.4 +/-    2.47      26.7 +/-    2.47  0.160 / 0.280