PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/13-12:12:50
G01     273.8          42.0                6.7 +/-    2.84       9.5 +/-    2.84  0.040 / 0.060
G03     316.1          32.0                5.0 +/-    0.80       8.4 +/-    0.80  0.050 / 0.060
G10     127.9          18.0                5.0 +/-    1.76      11.6 +/-    1.76  0.090 / 0.120
G11     251.9          20.7                6.3 +/-    2.30      13.6 +/-    2.30  0.080 / 0.130
G14     40.9           51.1                5.1 +/-    0.95       6.4 +/-    0.95  0.050 / 0.050
G18     233.9          40.5                8.8 +/-    1.52      12.7 +/-    1.52  0.040 / 0.060
G22     315.0          54.9                9.1 +/-    1.29      10.9 +/-    1.29  0.050 / 0.050
G25     54.3           16.7                4.2 +/-    3.22      10.0 +/-    3.22  0.050 / 0.040
G31     66.0           77.1                6.0 +/-    0.39       6.1 +/-    0.39  0.060 / 0.090
G32     57.9           39.0                5.2 +/-    1.00       7.7 +/-    1.00  0.070 / 0.090