PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-14:58:00
G08     270.8          18.2                7.1 +/-    1.55      16.3 +/-    1.55  0.130 / 0.170
G10     58.6           59.2                6.5 +/-    0.89       7.5 +/-    0.89  0.120 / 0.200
G11     313.8          14.4                2.9 +/-    3.07       7.2 +/-    3.07  0.210 / 0.370
G14     263.0          64.2                7.5 +/-    0.73       8.3 +/-    0.73  0.130 / 0.310
G21     153.7          14.1                8.9 +/-    3.19      22.6 +/-    3.19  0.050 / 0.040
G24     40.4           11.4                6.8 +/-    1.26      18.3 +/-    1.26  0.040 / 0.040
G27     231.7          16.2                7.2 +/-    2.77      17.4 +/-    2.77  0.160 / 0.280
G31     178.2          29.8                8.1 +/-    1.37      14.2 +/-    1.37  0.220 / 0.210
G32     337.7          74.4                6.7 +/-    0.37       7.0 +/-    0.37  0.080 / 0.100