PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-17:58:00
G01     248.7          34.0                9.2 +/-    1.30      14.8 +/-    1.30  0.040 / 0.050
G03     315.2          48.9                7.9 +/-    1.31      10.1 +/-    1.31  0.040 / 0.040
G11     237.9          11.6               10.5 +/-    2.10      28.4 +/-    2.10  0.120 / 0.310
G14     61.6           40.6                8.7 +/-    0.41      12.5 +/-    0.41  0.090 / 0.290
G16     162.6          20.0                3.5 +/-   21.86       7.6 +/-   21.86  0.040 / 0.040
G22     300.2          69.4                8.8 +/-    0.70       9.3 +/-    0.70  0.030 / 0.050
G23     288.9          21.7                8.5 +/-    1.61      17.9 +/-    1.61  0.050 / 0.100
G26     133.7          40.0               11.1 +/-    0.95      16.1 +/-    0.95  0.050 / 0.100
G31     40.6           55.6                7.8 +/-    0.62       9.2 +/-    0.62  0.080 / 0.240
G32     79.6           20.9                8.4 +/-    1.04      18.1 +/-    1.04  0.080 / 0.230