PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-00:12:30
G02     319.8          81.3               11.5 +/-    0.63      11.6 +/-    0.63  0.030 / 0.040
G05     165.5          29.2               19.5 +/-    0.82      34.8 +/-    0.82  0.040 / 0.040
G06     40.6           44.7                8.9 +/-    0.43      12.1 +/-    0.43  0.070 / 0.090
G12     317.5          66.1                9.7 +/-    1.28      10.5 +/-    1.28  0.070 / 0.110
G17     80.5           17.4               10.8 +/-    1.18      25.4 +/-    1.18  0.080 / 0.230
G19     69.3           31.7               11.7 +/-    0.59      19.7 +/-    0.59  0.130 / 0.180
G24     232.5          26.4               17.7 +/-    1.63      33.4 +/-    1.63  0.030 / 0.040
G25     317.8          23.2                8.4 +/-    1.13      17.1 +/-    1.13  0.030 / 0.030