PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-07:42:50
G01     110.9          23.3                5.3 +/-    1.94      10.8 +/-    1.94  0.030 / 0.030
G07     101.4          60.0                5.7 +/-    0.99       6.5 +/-    0.99  0.030 / 0.020
G08     41.9           21.5                2.0 +/-    0.81       4.2 +/-    0.81  0.030 / 0.040
G09     172.5          13.2                4.2 +/-    2.45      10.9 +/-    2.45  0.040 / 0.050
G11     92.3           42.3                6.1 +/-    0.51       8.6 +/-    0.51  0.080 / 0.210
G13     312.3          26.5                2.0 +/-    0.96       3.7 +/-    0.96  0.080 / 0.220
G17     203.4          36.0                6.0 +/-    1.01       9.3 +/-    1.01  0.060 / 0.190
G18     82.5           23.2                3.2 +/-    1.40       6.6 +/-    1.40  0.060 / 0.220
G28     307.4          59.6                4.1 +/-    0.68       4.6 +/-    0.68  0.080 / 0.180
G30     1.5            74.9                5.4 +/-    0.66       5.6 +/-    0.66  0.080 / 0.200