PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-06:57:50
G01     106.4          24.4                4.6 +/-    1.15       9.2 +/-    1.15  0.030 / 0.030
G07     105.2          58.3                6.4 +/-    0.39       7.4 +/-    0.39  0.030 / 0.030
G08     42.1           22.4                2.3 +/-    0.94       4.7 +/-    0.94  0.080 / 0.180
G09     173.7          13.6                5.6 +/-    3.82      14.5 +/-    3.82  0.070 / 0.190
G11     93.5           44.6                6.1 +/-    0.76       8.2 +/-    0.76  0.050 / 0.040
G13     310.0          29.1                4.3 +/-    1.57       7.7 +/-    1.57  0.040 / 0.050
G17     204.5          35.3                7.6 +/-    1.13      12.0 +/-    1.13  0.040 / 0.070
G19     207.5          13.8                4.8 +/-    1.50      12.3 +/-    1.50  0.040 / 0.070
G28     300.9          56.9                4.9 +/-    0.81       5.7 +/-    0.81  0.040 / 0.060
G30     4.9            76.5                6.0 +/-    0.61       6.2 +/-    0.61  0.040 / 0.060