PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-13:57:50
G08     272.7          18.5                6.2 +/-    1.42      14.2 +/-    1.42  0.100 / 0.190
G10     56.3           59.6                4.2 +/-    0.93       4.8 +/-    0.93  0.090 / 0.150
G11     314.9          13.2                2.7 +/-    2.40       7.1 +/-    2.40  0.060 / 0.050
G14     260.0          63.0                6.7 +/-    1.18       7.4 +/-    1.18  0.040 / 0.050
G21     153.7          15.8                8.2 +/-    1.67      20.1 +/-    1.67  0.080 / 0.100
G24     40.9           12.2                4.2 +/-    2.16      11.1 +/-    2.16  0.060 / 0.100
G27     232.7          17.1                5.0 +/-    1.78      11.8 +/-    1.78  0.160 / 0.250
G31     178.1          28.8                6.6 +/-    2.17      11.8 +/-    2.17  0.190 / 0.310
G32     334.3          74.9                5.3 +/-    0.42       5.5 +/-    0.42  0.030 / 0.030