PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-13:43:00
G01     123.9          13.1                8.0 +/-    2.67      20.8 +/-    2.67  0.090 / 0.070
G07     71.3           66.2                8.1 +/-    0.40       8.8 +/-    0.40  0.100 / 0.090
G08     49.5           39.2                7.1 +/-    1.02      10.5 +/-    1.02  0.050 / 0.080
G09     178.4          34.4                8.3 +/-    1.12      13.3 +/-    1.12  0.060 / 0.090
G11     114.9          37.7                8.8 +/-    1.05      13.3 +/-    1.05  0.030 / 0.030
G13     319.9          14.9                5.6 +/-    1.92      14.0 +/-    1.92  0.030 / 0.030
G17     200.4          15.5                6.5 +/-    1.80      15.9 +/-    1.80  0.100 / 0.230
G18     99.9           17.9                7.7 +/-    1.15      17.9 +/-    1.15  0.180 / 0.170
G28     273.9          49.9                7.4 +/-    2.87       9.3 +/-    2.87  0.080 / 0.100
G30     339.6          64.7                7.2 +/-    0.83       7.9 +/-    0.83  0.080 / 0.110