PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-12:57:50
G01     70.4           32.8                5.0 +/-    1.41       8.2 +/-    1.41  0.050 / 0.060
G07     137.6          30.6                5.7 +/-    1.68       9.9 +/-    1.68  0.060 / 0.070
G11     52.6           29.4                4.9 +/-    1.02       8.8 +/-    1.02  0.060 / 0.130
G13     273.7          37.7                5.8 +/-    1.53       8.8 +/-    1.53  0.080 / 0.120
G15     305.6          13.4                1.5 +/-    2.85       3.8 +/-    2.85  0.040 / 0.060
G17     234.7          71.2                6.8 +/-    1.67       7.1 +/-    1.67  0.030 / 0.060
G18     48.3           17.6                3.3 +/-    2.68       7.7 +/-    2.68  0.030 / 0.030
G19     224.1          38.6                5.0 +/-    1.53       7.5 +/-    1.53  0.040 / 0.030
G28     19.6           59.3                5.8 +/-    0.76       6.6 +/-    0.76  0.090 / 0.190
G30     135.9          63.5                7.4 +/-    0.51       8.1 +/-    0.51  0.110 / 0.220