PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-13:12:50
G01     111.7          22.9                6.0 +/-    1.01      12.3 +/-    1.01  0.040 / 0.030
G07     98.6           61.7                5.0 +/-    0.70       5.6 +/-    0.70  0.030 / 0.030
G08     42.3           23.4                3.6 +/-    1.09       7.3 +/-    1.09  0.100 / 0.200
G09     174.5          16.4                6.9 +/-    2.43      16.5 +/-    2.43  0.090 / 0.200
G11     94.6           42.1                6.1 +/-    0.81       8.6 +/-    0.81  0.040 / 0.060
G13     313.0          25.7                5.1 +/-    1.25       9.8 +/-    1.25  0.040 / 0.060
G17     203.8          33.5                6.4 +/-    1.76      10.4 +/-    1.76  0.080 / 0.100
G18     85.1           23.3                3.5 +/-    1.18       7.1 +/-    1.18  0.040 / 0.100
G28     307.9          59.9                4.6 +/-    1.13       5.3 +/-    1.13  0.030 / 0.040
G30     1.2            74.5                5.4 +/-    0.55       5.6 +/-    0.55  0.030 / 0.050