PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-08:12:40
G01     78.0           32.3                5.4 +/-    0.78       9.1 +/-    0.78  0.040 / 0.040
G07     132.2          36.9                6.9 +/-    0.74      10.6 +/-    0.74  0.040 / 0.030
G11     60.8           38.0                5.1 +/-    0.55       7.7 +/-    0.55  0.040 / 0.080
G13     282.9          38.9                6.8 +/-    0.95      10.0 +/-    0.95  0.040 / 0.090
G15     308.4          13.6                2.1 +/-    1.85       5.5 +/-    1.85  0.030 / 0.040
G17     220.7          60.8                7.7 +/-    1.33       8.7 +/-    1.33  0.030 / 0.040
G19     217.9          37.1                7.1 +/-    0.55      10.8 +/-    0.55  0.070 / 0.100
G28     348.9          61.5                3.3 +/-    0.67       3.7 +/-    0.67  0.060 / 0.100
G30     124.5          71.9                7.3 +/-    0.46       7.6 +/-    0.46  0.040 / 0.060