PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-09:42:50
G01     89.7           30.9                5.4 +/-    0.95       9.3 +/-    0.95  0.030 / 0.060
G07     124.6          44.6                7.4 +/-    0.71      10.0 +/-    0.71  0.040 / 0.050
G08     42.3           10.8                3.6 +/-    2.39       9.8 +/-    2.39  0.030 / 0.050
G11     70.7           42.0                5.3 +/-    1.17       7.5 +/-    1.17  0.040 / 0.050
G13     294.8          36.9                7.7 +/-    3.97      11.8 +/-    3.97  0.120 / 0.140
G17     212.9          50.0                5.9 +/-    0.64       7.4 +/-    0.64  0.100 / 0.160
G18     64.1           23.9                5.2 +/-    1.69      10.4 +/-    1.69  0.080 / 0.170
G19     213.0          28.0                4.3 +/-    2.36       7.8 +/-    2.36  0.060 / 0.150
G28     331.2          61.0                4.4 +/-    0.71       5.0 +/-    0.71  0.040 / 0.050
G30     96.7           78.4                5.6 +/-    0.28       5.7 +/-    0.28  0.040 / 0.050