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                4.8 +/-    2.56      10.0 +/-    2.56  0.030 / 0.030
G06     175.6          29.1                8.7 +/-    0.94      15.6 +/-    0.94  0.050 / 0.030
G11     44.1           13.6                2.9 +/-    1.70       7.6 +/-    1.70  0.090 / 0.140
G13     245.3          29.0                6.8 +/-    1.81      12.1 +/-    1.81  0.100 / 0.120
G15     281.0          14.7                2.3 +/-    1.64       5.8 +/-    1.64  0.040 / 0.040
G17     319.4          77.7                6.3 +/-    0.52       6.5 +/-    0.52  0.040 / 0.040
G19     253.7          64.8                7.1 +/-    0.70       7.8 +/-    0.70  0.040 / 0.050
G28     48.2           55.9                6.0 +/-    0.50       7.1 +/-    0.50  0.040 / 0.050
G30     151.8          39.0                9.2 +/-    0.64      13.5 +/-    0.64  0.070 / 0.180