PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/16-23:42:50
G01     73.5           33.2                9.2 +/-    1.15      15.1 +/-    1.15  0.220 / 0.270
G07     136.1          33.5               12.7 +/-    1.18      20.7 +/-    1.18  0.050 / 0.070
G11     57.2           34.3                9.0 +/-    1.20      14.5 +/-    1.20  0.030 / 0.050
G13     278.1          37.5               10.5 +/-    1.38      15.9 +/-    1.38  0.030 / 0.040
G15     304.0          15.2                6.8 +/-    1.19      16.9 +/-    1.19  0.050 / 0.040
G17     229.1          63.9               10.7 +/-    1.06      11.7 +/-    1.06  0.050 / 0.040
G19     222.7          39.8               11.6 +/-    1.69      17.0 +/-    1.69  0.050 / 0.090
G28     16.7           59.6                8.6 +/-    1.07       9.9 +/-    1.07  0.050 / 0.080
G30     132.9          60.6               11.8 +/-    0.47      13.4 +/-    0.47  0.050 / 0.080