PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-14:58:00
G01     97.1           29.1                8.9 +/-    0.91      15.8 +/-    0.91  0.040 / 0.050
G07     119.6          46.9                8.5 +/-    0.39      11.2 +/-    0.39  0.040 / 0.050
G08     41.8           14.8                7.2 +/-    1.49      17.9 +/-    1.49  0.040 / 0.070
G11     76.4           42.5                8.1 +/-    0.74      11.4 +/-    0.74  0.060 / 0.080
G13     301.3          34.4                8.7 +/-    1.01      14.0 +/-    1.01  0.030 / 0.050
G17     209.5          44.4               10.7 +/-    1.05      14.6 +/-    1.05  0.030 / 0.050
G18     69.8           24.3                7.5 +/-    0.69      14.8 +/-    0.69  0.060 / 0.070
G19     210.9          21.8                9.4 +/-    1.57      19.9 +/-    1.57  0.040 / 0.050
G28     323.0          60.5                7.7 +/-    0.65       8.7 +/-    0.65  0.080 / 0.130
G30     82.4           78.1                8.2 +/-    0.52       8.3 +/-    0.52  0.060 / 0.130