PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-03:43:00
G08     300.9          22.3                5.7 +/-    1.90      11.9 +/-    1.90  0.030 / 0.030
G10     345.3          61.7                4.5 +/-    0.57       5.1 +/-    0.57  0.030 / 0.030
G14     223.0          39.9                7.4 +/-    0.65      10.9 +/-    0.65  0.060 / 0.090
G18     48.2           57.1                4.2 +/-    0.59       4.9 +/-    0.59  0.060 / 0.090
G21     140.4          49.6                7.6 +/-    1.17       9.7 +/-    1.17  0.060 / 0.100
G24     66.7           29.6                5.6 +/-    0.96       9.9 +/-    0.96  0.060 / 0.090
G27     263.0          35.5                7.0 +/-    1.57      11.0 +/-    1.57  0.050 / 0.070
G32     231.6          59.0                7.9 +/-    1.19       9.0 +/-    1.19  0.040 / 0.070