PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-01:27:50
G01     57.3           29.5                5.7 +/-    1.98      10.1 +/-    1.98  0.030 / 0.050
G06     180.6          16.3                7.1 +/-    1.50      17.1 +/-    1.50  0.040 / 0.050
G07     143.5          20.0                6.0 +/-    1.10      13.2 +/-    1.10  0.070 / 0.080
G11     48.3           24.1                3.8 +/-    1.24       7.6 +/-    1.24  0.080 / 0.100
G13     260.1          34.0                7.0 +/-    1.23      11.4 +/-    1.23  0.130 / 0.220
G15     290.5          16.7                6.3 +/-    1.24      15.0 +/-    1.24  0.170 / 0.330
G17     265.6          76.1                6.1 +/-    0.53       6.2 +/-    0.53  0.030 / 0.030
G19     236.1          53.5                7.3 +/-    1.65       8.8 +/-    1.65  0.020 / 0.030
G28     41.3           55.4                3.5 +/-    1.47       4.2 +/-    1.47  0.110 / 0.190
G30     144.6          45.5                7.4 +/-    0.81       9.9 +/-    0.81  0.130 / 0.180