PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-20:12:30
G02     297.5          81.0                8.2 +/-    0.48       8.3 +/-    0.48  0.040 / 0.040
G05     166.9          27.3               12.2 +/-    1.95      22.7 +/-    1.95  0.040 / 0.030
G06     40.7           44.9                8.1 +/-    0.69      11.0 +/-    0.69  0.080 / 0.120
G12     318.5          67.5                8.1 +/-    0.97       8.7 +/-    0.97  0.110 / 0.110
G17     80.6           15.7                8.8 +/-    1.18      21.6 +/-    1.18  0.130 / 0.190
G19     67.2           33.5                8.7 +/-    1.50      14.3 +/-    1.50  0.160 / 0.190
G24     232.6          27.0               11.4 +/-    1.34      21.3 +/-    1.34  0.050 / 0.050
G25     317.7          23.0                7.9 +/-    1.93      16.1 +/-    1.93  0.040 / 0.040