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                3.0 +/-    0.49       6.2 +/-    0.49  0.050 / 0.070
G06     175.6          29.2                7.1 +/-    1.33      12.7 +/-    1.33  0.050 / 0.070
G11     44.2           13.8                2.2 +/-    2.20       5.6 +/-    2.20  0.020 / 0.030
G13     245.2          29.0                5.1 +/-    1.38       9.1 +/-    1.38  0.030 / 0.030
G15     280.4          14.8                4.0 +/-    1.69       9.9 +/-    1.69  0.080 / 0.180
G17     322.0          77.7                5.6 +/-    0.83       5.7 +/-    0.83  0.080 / 0.190
G19     253.8          64.9                4.6 +/-    0.61       5.0 +/-    0.61  0.040 / 0.040
G28     47.9           56.0                3.2 +/-    0.71       3.8 +/-    0.71  0.040 / 0.040
G30     151.9          39.4                6.7 +/-    0.39       9.9 +/-    0.39  0.140 / 0.130