PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/21-08:58:00
G01     100.3          27.5                5.8 +/-    0.82      10.8 +/-    0.82  0.040 / 0.040
G07     114.4          52.7                4.7 +/-    0.36       5.7 +/-    0.36  0.050 / 0.040
G08     41.8           18.4                2.1 +/-    0.62       4.8 +/-    0.62  0.020 / 0.040
G11     83.5           44.3                4.5 +/-    0.80       6.2 +/-    0.80  0.030 / 0.050
G13     304.7          32.8                3.5 +/-    1.15       5.7 +/-    1.15  0.040 / 0.080
G17     207.5          40.7                6.1 +/-    0.83       8.8 +/-    0.83  0.040 / 0.070
G18     74.3           24.7                3.9 +/-    0.89       7.6 +/-    0.89  0.060 / 0.140
G19     209.3          19.3               -2.0 +/-    9.15      -4.5 +/-    9.15  0.060 / 0.140
G28     312.9          59.1                4.0 +/-    1.25       4.5 +/-    1.25  0.140 / 0.410
G30     38.4           80.2                5.0 +/-    0.72       5.1 +/-    0.72  0.160 / 0.290