PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-01:42:40
G02     350.3          78.1               10.7 +/-    0.33      10.9 +/-    0.33  0.050 / 0.060
G05     162.9          34.6               13.3 +/-    1.13      21.2 +/-    1.13  0.070 / 0.060
G06     41.7           40.0                9.7 +/-    1.32      14.1 +/-    1.32  0.040 / 0.030
G12     311.3          71.1               10.6 +/-    0.42      11.2 +/-    0.42  0.030 / 0.030
G17     84.6           15.0               11.4 +/-    1.40      28.2 +/-    1.40  0.050 / 0.100
G19     74.7           28.0               10.4 +/-    0.93      18.9 +/-    0.93  0.080 / 0.090
G24     228.4          22.6               14.7 +/-    2.86      30.3 +/-    2.86  0.120 / 0.220
G25     317.4          28.1                9.8 +/-    1.90      17.9 +/-    1.90  0.140 / 0.180