PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-06:58:00
G10     263.3          35.7                6.9 +/-    1.02      10.8 +/-    1.02  0.040 / 0.030
G13     43.9           21.3                4.6 +/-    1.67       9.7 +/-    1.67  0.030 / 0.030
G15     62.8           50.7                4.5 +/-    1.01       5.6 +/-    1.01  0.120 / 0.280
G16     282.0          13.1                4.8 +/-    2.03      12.5 +/-    2.03  0.120 / 0.280
G20     14.7           65.2                4.9 +/-    0.51       5.3 +/-    0.51  0.280 / 0.240
G21     355.0          69.6                5.2 +/-    0.74       5.5 +/-    0.74  0.180 / 0.210
G24     123.3          12.1                6.9 +/-    2.88      18.3 +/-    2.88  0.220 / 0.410
G27     319.8          16.6                4.6 +/-    2.97      11.0 +/-    2.97  0.280 / 0.220
G29     167.7          35.1                6.0 +/-    1.42       9.5 +/-    1.42  0.050 / 0.040