PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/28-00:43:10
G02     247.7          78.1                9.0 +/-    0.56       9.1 +/-    0.56  0.040 / 0.060
G05     170.2          18.3               18.5 +/-    1.55      42.5 +/-    1.55  0.040 / 0.060
G06     40.4           56.8                8.1 +/-    0.88       9.4 +/-    0.88  0.030 / 0.080
G12     321.5          53.3               10.4 +/-    1.41      12.7 +/-    1.41  0.030 / 0.040
G17     70.2           25.0                9.1 +/-    0.87      17.7 +/-    0.87  0.070 / 0.190
G19     57.8           38.7                9.1 +/-    0.24      13.5 +/-    0.24  0.050 / 0.210
G24     243.8          34.0               13.5 +/-    0.93      21.8 +/-    0.93  0.130 / 0.320
G25     316.9          12.7                6.1 +/-    3.54      16.1 +/-    3.54  0.140 / 0.310