PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/13-17:27:50
G01     235.8          26.1                9.7 +/-    1.44      18.6 +/-    1.44  0.040 / 0.040
G03     307.6          60.0                9.5 +/-    0.90      10.8 +/-    0.90  0.040 / 0.050
G14     75.4           31.0                8.9 +/-    1.86      15.2 +/-    1.86  0.070 / 0.160
G16     158.8          30.0               12.3 +/-    0.99      21.6 +/-    0.99  0.080 / 0.150
G18     207.5          14.3               12.8 +/-    2.16      32.5 +/-    2.16  0.090 / 0.170
G22     256.1          76.2               10.1 +/-    0.37      10.4 +/-    0.37  0.140 / 0.160
G23     297.1          27.4                7.7 +/-    2.25      14.2 +/-    2.25  0.100 / 0.130
G26     128.0          48.2               11.6 +/-    0.80      14.9 +/-    0.80  0.090 / 0.140
G31     40.6           47.3                8.2 +/-    0.90      10.7 +/-    0.90  0.070 / 0.130
G32     88.3           16.2               11.7 +/-    2.81      28.1 +/-    2.81  0.060 / 0.120