PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-11:27:50
G01     46.1           22.1                4.7 +/-    0.77       9.9 +/-    0.77  0.040 / 0.050
G06     175.6          29.1               10.9 +/-    1.64      19.5 +/-    1.64  0.040 / 0.050
G11     44.1           13.6                2.9 +/-    1.30       7.4 +/-    1.30  0.030 / 0.030
G13     245.3          29.0                5.8 +/-    1.79      10.4 +/-    1.79  0.030 / 0.030
G15     281.0          14.7                3.3 +/-    2.27       8.3 +/-    2.27  0.080 / 0.170
G17     319.4          77.7                6.7 +/-    0.88       6.8 +/-    0.88  0.080 / 0.180
G19     253.7          64.8                5.1 +/-    0.67       5.6 +/-    0.67  0.040 / 0.040
G28     48.2           55.9                5.5 +/-    0.81       6.5 +/-    0.81  0.050 / 0.050
G30     151.8          39.0               10.5 +/-    0.46      15.5 +/-    0.46  0.090 / 0.270