PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-04:28:00
G08     299.4          22.0                6.0 +/-    0.67      12.6 +/-    0.67  0.060 / 0.070
G10     355.8          62.5                5.5 +/-    0.75       6.2 +/-    0.75  0.060 / 0.080
G14     225.4          38.6                9.8 +/-    0.72      14.6 +/-    0.72  0.070 / 0.110
G20     48.2           59.4                6.5 +/-    0.44       7.5 +/-    0.44  0.080 / 0.090
G21     143.7          46.5                8.9 +/-    0.77      11.7 +/-    0.77  0.050 / 0.160
G24     60.4           27.1                5.7 +/-    0.86      10.6 +/-    0.86  0.060 / 0.150
G27     260.3          34.1                7.5 +/-    1.36      12.1 +/-    1.36  0.050 / 0.030
G32     237.6          65.2                8.8 +/-    0.98       9.5 +/-    0.98  0.040 / 0.030