PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-07:57:50
G08     304.8          21.1                5.5 +/-    1.56      11.8 +/-    1.56  0.050 / 0.040
G10     345.0          61.6                2.3 +/-    0.69       2.6 +/-    0.69  0.050 / 0.040
G14     220.7          36.5                8.0 +/-    1.05      12.4 +/-    1.05  0.030 / 0.030
G20     47.6           57.9                3.8 +/-    0.67       4.4 +/-    0.67  0.030 / 0.030
G21     139.0          50.3                5.8 +/-    0.61       7.3 +/-    0.61  0.110 / 0.090
G24     66.9           28.7                2.2 +/-    1.61       4.0 +/-    1.61  0.070 / 0.080
G27     269.9          36.3                8.8 +/-    0.78      13.6 +/-    0.78  0.090 / 0.130
G32     227.5          52.5                9.5 +/-    2.73      11.6 +/-    2.73  0.100 / 0.120