PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-22:57:50
G02     292.8          81.5               12.4 +/-    0.76      12.6 +/-    0.76  0.120 / 0.350
G05     167.2          25.3               20.8 +/-    1.88      40.3 +/-    1.88  0.110 / 0.310
G06     39.2           50.9               11.8 +/-    0.44      14.7 +/-    0.44  0.080 / 0.150
G12     319.5          58.9               12.5 +/-    0.60      14.3 +/-    0.60  0.090 / 0.150
G17     78.3           16.6               10.6 +/-    1.44      25.2 +/-    1.44  0.030 / 0.050
G19     66.4           32.1               11.7 +/-    0.60      19.6 +/-    0.60  0.030 / 0.040
G24     235.1          28.6               15.3 +/-    1.04      27.5 +/-    1.04  0.030 / 0.030
G25     317.4          20.7                9.8 +/-    2.30      21.3 +/-    2.30  0.050 / 0.040