PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/11-10:57:50
G02     204.8          38.8                6.9 +/-    0.73      10.3 +/-    0.73  0.060 / 0.040
G06     146.1          73.9                7.5 +/-    0.71       7.8 +/-    0.71  0.040 / 0.030
G12     309.8          20.5                2.1 +/-    2.89       4.5 +/-    2.89  0.050 / 0.140
G17     38.9           46.7                4.3 +/-    1.40       5.6 +/-    1.40  0.060 / 0.120
G19     14.0           61.4                4.5 +/-    0.69       5.0 +/-    0.69  0.180 / 0.200
G24     293.8          38.8                4.5 +/-    1.85       6.6 +/-    1.85  0.190 / 0.200
G28     102.9          34.9                8.9 +/-    0.57      14.1 +/-    0.57  0.030 / 0.020