PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-08:43:10
G01     113.9          20.0                4.5 +/-    1.38      10.0 +/-    1.38  0.080 / 0.080
G07     92.3           62.7                4.6 +/-    0.68       5.1 +/-    0.68  0.050 / 0.070
G08     44.2           30.5                2.4 +/-    1.35       4.2 +/-    1.35  0.030 / 0.050
G09     175.6          21.7                6.2 +/-    1.62      13.0 +/-    1.62  0.030 / 0.040
G11     103.2          42.7                5.3 +/-    1.07       7.5 +/-    1.07  0.080 / 0.130
G13     315.1          23.7                2.3 +/-    1.82       4.6 +/-    1.82  0.060 / 0.130
G17     202.5          26.3                2.9 +/-    1.51       5.6 +/-    1.51  0.080 / 0.220
G18     89.3           22.2                3.5 +/-    1.46       7.2 +/-    1.46  0.090 / 0.170
G28     288.9          54.3                5.7 +/-    0.87       6.8 +/-    0.87  0.090 / 0.130
G30     349.6          71.0                3.1 +/-    1.06       3.2 +/-    1.06  0.090 / 0.150