PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/01-03:12:50
G01     57.9           29.7                5.8 +/-    1.87      10.2 +/-    1.87  0.050 / 0.050
G06     181.6          14.8                7.6 +/-    1.16      19.1 +/-    1.16  0.040 / 0.050
G07     143.2          20.4                6.9 +/-    1.95      15.1 +/-    1.95  0.080 / 0.070
G11     48.2           23.7                3.8 +/-    1.32       7.6 +/-    1.32  0.060 / 0.080
G13     261.1          34.3                7.8 +/-    1.47      12.6 +/-    1.47  0.130 / 0.240
G15     291.0          16.8                6.1 +/-    2.19      14.5 +/-    2.19  0.160 / 0.210
G17     266.5          76.8                7.8 +/-    0.45       8.0 +/-    0.45  0.090 / 0.140
G19     235.5          53.4                9.2 +/-    1.84      11.2 +/-    1.84  0.160 / 0.170
G28     40.4           55.6                3.8 +/-    2.17       4.5 +/-    2.17  0.030 / 0.030
G30     144.2          46.2                9.7 +/-    0.85      12.9 +/-    0.85  0.020 / 0.030