PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/25-07:57:40
G01     57.6           29.0                3.6 +/-    1.08       6.5 +/-    1.08  0.040 / 0.040
G06     178.7          15.9                4.3 +/-    1.78      10.5 +/-    1.78  0.040 / 0.040
G07     142.1          21.0                6.8 +/-    1.76      14.7 +/-    1.76  0.170 / 0.300
G11     48.6           25.9                4.9 +/-    1.92       9.4 +/-    1.92  0.250 / 0.330
G13     260.1          36.0                7.8 +/-    2.23      12.2 +/-    2.23  0.200 / 0.350
G15     291.9          16.7                5.6 +/-    1.76      13.3 +/-    1.76  0.190 / 0.480
G17     258.1          76.6                7.0 +/-    0.34       7.1 +/-    0.34  0.050 / 0.050
G19     232.7          53.7                8.3 +/-    2.57      10.0 +/-    2.57  0.040 / 0.050
G28     22.6           60.0                4.2 +/-    1.09       4.7 +/-    1.09  0.060 / 0.130
G30     145.1          54.7                8.2 +/-    0.77       9.8 +/-    0.77  0.070 / 0.160