PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-06:58:00
G08     308.5          18.7                5.7 +/-    1.00      13.0 +/-    1.00  0.050 / 0.050
G10     338.7          60.9                3.4 +/-    0.72       3.8 +/-    0.72  0.040 / 0.060
G14     220.4          29.6                7.3 +/-    1.27      12.8 +/-    1.27  0.080 / 0.210
G20     65.3           45.4                3.6 +/-    0.92       4.8 +/-    0.92  0.110 / 0.190
G21     137.6          54.1                8.3 +/-    0.82      10.0 +/-    0.82  0.080 / 0.080
G24     69.6           29.5                4.3 +/-    0.61       7.7 +/-    0.61  0.090 / 0.070
G27     269.8          36.7                7.2 +/-    1.43      11.0 +/-    1.43  0.050 / 0.040
G32     226.9          57.7                8.8 +/-    0.88      10.2 +/-    0.88  0.030 / 0.040