PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-21:57:30
G10     245.3          22.2               10.5 +/-    2.23      21.9 +/-    2.23  0.040 / 0.050
G13     59.9           32.9                7.3 +/-    1.21      12.0 +/-    1.21  0.040 / 0.060
G15     107.1          58.6                9.0 +/-    0.54      10.3 +/-    0.54  0.160 / 0.470
G16     300.4          16.1                6.2 +/-    2.57      15.0 +/-    2.57  0.120 / 0.350
G20     248.9          13.3                4.5 +/-    4.22      11.7 +/-    4.22  0.080 / 0.100
G21     324.9          54.8                7.3 +/-    0.60       8.7 +/-    0.60  0.070 / 0.100
G26     272.5          18.1                8.6 +/-    1.21      19.9 +/-    1.21  0.030 / 0.040
G29     163.2          58.8                8.3 +/-    0.95       9.5 +/-    0.95  0.030 / 0.040