PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-10:42:50
G01     46.0           22.0                3.4 +/-    2.71       7.1 +/-    2.71  0.040 / 0.030
G06     175.6          29.2                4.3 +/-    1.22       7.7 +/-    1.22  0.040 / 0.030
G11     44.2           13.8                1.8 +/-    2.64       4.6 +/-    2.64  0.040 / 0.040
G13     245.2          29.0                5.4 +/-    2.42       9.7 +/-    2.42  0.040 / 0.040
G15     280.4          14.8                1.4 +/-    2.01       3.5 +/-    2.01  0.070 / 0.240
G17     322.0          77.7                5.7 +/-    0.42       5.8 +/-    0.42  0.060 / 0.220
G19     253.8          64.9                5.9 +/-    0.34       6.4 +/-    0.34  0.060 / 0.070
G28     47.9           56.0                3.9 +/-    0.96       4.7 +/-    0.96  0.050 / 0.060
G30     151.9          39.4                6.1 +/-    0.79       9.0 +/-    0.79  0.080 / 0.110