PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-01:43:10
G10     247.1          23.7               11.8 +/-    2.49      23.7 +/-    2.49  0.040 / 0.070
G13     57.7           32.1                8.5 +/-    0.67      14.2 +/-    0.67  0.050 / 0.070
G15     98.1           58.4               10.4 +/-    0.30      12.0 +/-    0.30  0.050 / 0.140
G16     298.7          15.9                6.2 +/-    2.37      15.1 +/-    2.37  0.060 / 0.140
G20     261.3          43.3               10.9 +/-    0.60      15.0 +/-    0.60  0.170 / 0.490
G21     327.8          56.6                8.9 +/-    0.86      10.5 +/-    0.86  0.130 / 0.570
G26     270.4          17.3               10.5 +/-    2.51      24.7 +/-    2.51  0.030 / 0.050
G29     164.0          55.8               11.4 +/-    0.81      13.5 +/-    0.81  0.030 / 0.050