PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-13:57:40
G08     272.7          18.5                4.2 +/-    1.53       9.5 +/-    1.53  0.080 / 0.230
G10     56.3           59.6                3.1 +/-    0.90       3.5 +/-    0.90  0.090 / 0.250
G11     314.9          13.2                2.9 +/-    2.44       7.5 +/-    2.44  0.090 / 0.100
G14     260.0          63.0                5.3 +/-    1.02       5.8 +/-    1.02  0.050 / 0.110
G21     153.7          15.8                6.9 +/-    2.06      16.8 +/-    2.06  0.140 / 0.230
G24     40.9           12.2                3.7 +/-    1.20       9.9 +/-    1.20  0.190 / 0.250
G27     232.7          17.1                5.8 +/-    1.99      13.7 +/-    1.99  0.040 / 0.040
G31     178.1          28.8                7.2 +/-    1.38      12.9 +/-    1.38  0.040 / 0.060
G32     334.3          74.9                5.0 +/-    0.58       5.2 +/-    0.58  0.030 / 0.070